WO2000070212A1

WO2000070212A1 - Power plant generating electrical energy and comprising turbo-alternator means

Info

Publication number: WO2000070212A1
Application number: PCT/FR2000/001277
Authority: WO
Inventors: André LAPAIX
Original assignee: Lapaix Andre
Priority date: 1999-05-12
Filing date: 2000-05-11
Publication date: 2000-11-23
Also published as: FR2793523B1; FR2793523A1; AU4416200A

Abstract

The invention relates to a power plant (1) which generates electrical energy and comprises turbo-alternator means for the creation of electrical energy from a gas flow. Said means comprise one or several power units (3,4,5) which are defined by a nozzle (7,8,9) and are respectively provided with a propeller (13,14,15) which is rotationally driven by the gas flow. The inventive plant (1) comprises means for circulating the gas flow towards the turbo-alternator means. The invention can be used to produce electricity and, secondarily, to produce thermal energy.

Description

"Power generation plant with turbo alternator means"

The present invention relates to a power generation plant comprising turbo alternator means for the creation of electrical energy from a gas flow.

This plant will particularly find its application for the production of electricity and, secondarily, thermal energy. Various techniques are currently known for producing electrical energy.

First, nuclear or thermal power stations exist for the production of a significant amount of electrical energy. In addition to the environmental problems posed by this type of power plant, the energies at the base of this electric generation are exhaustible.

We have also thought of making devices able to use solar energy. This source of energy is indeed free and inexhaustible.

However, it remains uncertain and currently unsuitable for producing a large amount of electrical energy. Wind systems are also known. They have the same drawbacks as the solar devices presented above.

In this context, we know particularly from document FR-2. 431. 042 an assembly mainly comprising an aerogenerator oriented by the wind and supplying an electric current; an accumulator receiving current and transforming it by Joule effect into thermal energy. Means for restoring the stored energy are also formed.

This document reveals classic wind techniques.

Its application is specifically individual, for home use.

The disadvantages of current wind techniques are numerous and we can cite among them: - problems of storage of the energy produced, the low production in quantity of electric energy, the random nature, therefore not very manageable of the quantity of electric energy produced. The present invention aims to remedy the drawbacks of current techniques.

One of these first objects is, to do this, to offer an alternative to current power plants without falling into the pitfalls of often random backup systems currently existing such as the wind devices hitherto proposed.

Another object of the invention is to take advantage of the thermodynamic properties of a circulating gas. In particular, the invention takes advantage of the speed of the gas flow. Now the energy produced is a function of the cube of the flow speed. It follows that the invention will provide much higher electrical energy production capacities than known wind systems.

According to the invention, mechanical, hydraulic and thermodynamic characteristics are combined within the same installation. A synergy is created.

Another objective is to take advantage of a supply of solar energy without being dependent on the random nature of this energy production. The present invention also proposes an electrical energy generation plant allowing the internal circulation of a gas flow, in one embodiment.

In this sense, the invention has overcome a fundamental prejudice of the current technique according to which the gas flow is a natural wind, namely an element external to the power plant.

On the contrary, the invention proposes in one of its variants the creation and maintenance of a gas flow through various compartments of the plant.

This new solution route is particularly advantageous for meeting the objectives of the present invention and the problems of current techniques.

The present invention relates to a power generation plant, comprising turbo alternator means for the creation of electrical energy from a gas flow, characterized in that it comprises means for circulating the gas flow towards the turbo alternator means and that the turbo alternator means comprise one or more engine blocks delimited by a nozzle and each provided with a propeller driven in rotation by the gas flow, each engine block being connected to an alternator assembly for the creation of the 'electric energy.

The invention may be presented in different embodiments and in particular those set out below: - At least one engine block has a narrowing formed between a core in the axis of the propeller and a neck formed on the nozzle.

- A depression circuit is formed substantially between the narrowing and downstream of the propeller of one of the engine blocks, to increase the pressure difference between the upstream and downstream of the propeller.

- At least one engine block includes an adjustable core for the narrowing of the gas flow passage surface, making it possible to vary the acceleration of the gas flow at the level of the core.

- The nozzle is provided with gas heating means.

- at least one engine block comprises, at the head of the propeller hub, a set of turbines driven in a rotational movement, and that a secondary circuit for placing under vacuum is formed between the narrowing and the downstream of each turbine, to put them in rotation. the heating means are formed by a heating fluid circulating in a circuit formed in the thickness of the nozzle,

- Said fluid is heated by means of a heat exchanger.

- the primary fluid of the heat exchanger is heated by solar collectors. - The circulation means comprise a preparation compartment located upstream of the turbo alternator means, capable of placing the gas under the initial thermodynamic conditions of the flow circulation cycle. the distribution means able to reinject at least part of the gas flow upstream of the turbo alternator means from their downstream

- the preparation compartment has gas cooling means - it has a head compartment forming a gas reserve upstream of the preparation compartment and receiving at least part of the gas flow from the distribution means before its admission into the preparation compartment. the distribution means are formed by a distribution compartment reinjecting the gas flows into the head compartment and / or the preparation compartment by means of return circuits.

- the distribution compartment has a hot gas return circuit to the preparation compartment and a lukewarm gas return circuit to the head compartment.

- It includes a battery of heat exchangers through which the warm gas return circuit takes place in order to cool the gas coming from the distribution compartment before its reinjection into the head compartment.

- the heat exchanger battery generates recoverable thermal energy.

- The circulation means have burners positioned in the gas flow circuit to activate circulation from time to time. it comprises starting means, creating an initial depression downstream of the turbo alternator means for starting their rotation.

- The gas flow is an air flow and that it includes a wind capture upstream of the first engine block.

- It includes a capture module capable of delimiting, with the capture mouth, an air introduction zone.

- The capture module has means of displacement along the axis of the central unit to modify the section of the air introduction zone. the circulation means comprise a generator block downstream of the engine blocks capable of cooling the air flow for its depression. - It includes an intermediate block placed in an intermediate position between the engine blocks and the generator block in order to achieve a first acceleration of the air flow.

- It includes an air collection circuit downstream of the propeller of one of the engine blocks and that the generator block includes at least one hydro-ejector supplied by the collection circuit to accentuate the depressurization of the air flow .

- It includes entries of side winds on all or part of its lateral surface supplying a stabilization circuit of the power plant.

- It includes a ramjet circuit with at least one ramjet capable of accelerating an incoming air flow to supply a vacuum pump accentuating the vacuum produced by the generator block. - It comprises at least one upstream circuit starting from cones opening onto the front face of the central unit, said cones being convergent towards the interior of the central unit to accelerate the air flow with a view to its introduction into the intermediate block. - It includes a reinjection circuit of at least part of the air flow leaving the ramjet circuit, for its introduction at the level of the captaqe mouth.

- the intermediate DIOC comprises a plurality of cells each comprising a hydro-ejector working in a vacuum tube by supplying part of the air flow coming from the collection circuit.

- the intermediate block includes a chamber receiving the flows from the cells, said chamber having a wall acting as a heat exchanger for a first cooling of the air flow and comprising an inlet for the introduction of the air flow from the circuit upstream.

The attached drawings are given as indicative and non-limiting examples. They represent a mode of preferred embodiment according to the invention. They will allow the invention to be easily understood.

Figure 1 is an overall view in longitudinal section of the power plant in a first particular embodiment. FIG. 2 is a schematic view illustrating the main constituent elements of the invention and their connection, according to the embodiment of FIG. 1.

Figure 3 is an overall view in longitudinal section of the plant in a second embodiment. FIG. 4 is a schematic view illustrating the main constituent elements of the invention and their connection according to the embodiment of FIG. 3.

By way of example, it is indicated that the power plant 1 presented here may have a length of 140 meters for a capacity for producing electrical energy of the order of 80,000 to 100,000 kilowatts / hour.

Two variants of the invention are described successively below. The first embodiment presented is a plant for which the circulation of the gas flow is essentially internal. The second embodiment is a wind application of the present invention in the sense that the gas flow circulating in the plant comes from a natural wind.

Of course, these two cases are only given as indicative examples.

First embodiment

According to the invention, the power station 1 firstly comprises turbo alternator means.

These means allow, by their rotation, to generate electrical energy.

The mechanical energy allowing their rotation comes from the circulation of a gas flow. Turbo generator means are known in their function in wind systems which are very far from the present invention.

In a particular preferred embodiment, the gas used is air.

According to the invention, the plant 1 comprises means for circulating the gas flow.

It is essentially a question of circulating the gas through turbo alternator means to put them in rotation.

In addition, the invention includes distribution means.

They make it possible to work in an at least partially closed circuit: the gas flow is re-injected once it has passed through the turbo alternator means. In a preferred mode, the distribution means ensure total reinjection of the gas flow. We therefore work substantially in a closed circuit.

The combination of circulation means and distribution means is particularly advantageous and makes it possible to optimally exploit the properties of the gas flow.

(such as speed, temperature, pressure ...) which change during traffic.

A gas flow is therefore entirely created and maintained, which differs from wind systems exploiting a natural outside wind.

The present plant 1 is completely autonomous.

In a particular embodiment, the circulation means comprise a preparation compartment marked 2 in Figures 1 and 2. As shown in Figure 1, the preparation compartment is located in front of the turbo alternator means.

The essential function of the preparation compartment 2 is to place the gas in the initial thermodynamic conditions in the cycle of its circulation. As illustrated in FIG. 1, the compartment 2 can be in the form of a double-walled conical nozzle.

The wall of the preparation compartment is illustrated by the reference 6 in FIG. 1. The conical nozzle has a large section located on the side of the gas inlet while the small section is extended by a conical diffuser on the other side of the compartment preparation 2.

In a preferred embodiment, the preparation compartment 2 comprises means for cooling the gas.

These means can be achieved by circulating, in the walls 6 of the preparation compartment 2, fresh air at high flow rate.

For example, this will maintain inside the preparation compartment 2 a temperature of about 40 ° C.

Preferably, and as at other levels of the plant 1 presented here, a specific reheating action may be created within the preparation compartment 2 by means of burners 28 as shown in FIG. 1.

A preferred embodiment of the turbo alternator means implemented in this plant 1 is described below.

These means will thus be formed by one or, preferably, several engine blocks 3, 4 and 5 each delimited by a nozzle 7, 8, 9.

As indicated in FIG. 1, each engine block 3, 4, 5 is provided with a propeller 13, 14, 15 capable of being driven in rotation by the gas flow. The engine blocks 3, 4, 5 are also connected to an alternator assembly shown diagrammatically at reference 10 in FIG. 1 and 2 for the creation of electrical energy.

As illustrated in FIG. 1 and preferably, the engine blocks 3, 4, 5 will be arranged in series so that that the gas flow passes successively through the three engine blocks 3, 4, 5.

We can use engine blocks 3, 4, 5 of the same design. In this context, only geometric and in particular dimensional differences may exist.

The installation in series allows a capitalization of the situation downstream of the previous engine block.

Indeed, the speed of the gas flow at the outlet of the first engine block 3, for example, makes it possible to obtain an acceleration of this speed when the flow passes through the following engine block 4.

By way of nonlimiting example, the engine block 3 may have a nozzle 7 with a large intake section with a diameter of 35 meters.

Within the nozzle 7, a propeller 13 with a diameter of 34 meters and comprising four blades can be installed.

Still by way of example, the nozzle 7 of the engine block 3 may be conical with a minimum terminal diameter of the order of 12.60 meters.

As shown in Figure 1, the nozzle 7 is then extended by a neck 12 of identical diameter (according to the example, 12.60 meters).

FIG. 1 shows the formation of a narrowing 18 between a core 11 formed in the axis of the propeller 13 and the neck 12 of the nozzle 7.

At this level, a strong increase in the pressure and the speed of the flow is noted.

In a preferred embodiment, we take advantage of these thermodynamic modifications of the gas flow to implant a vacuum circuit 16.

This circuit 16 is formed substantially between the narrowing 18 and the downstream 17 of the propeller 13 of one of the engine blocks 3, 4, 5. As illustrated in FIG. 1, a dotted line marked 16 schematizes this circuit 16 for placing under vacuum.

Vacuuming is carried out here downstream 17 of the propeller 13 of the first engine block 3. By means of the vacuuming circuit 16, the pressure difference existing between upstream and downstream 17 is increased by 1 propeller 13.

In addition, the core 11 may have means for adjusting the narrowing 18. It is thus possible to vary the passage surface of the gas flow so as to modify the acceleration of the latter.

For example, an adjustable core could be formed by means of a flange allowing the diameter of the core to be adjusted. The nozzle 7, 8, 9 of the engine blocks 3, 4, 5 may include means 20 for heating the gas.

As shown schematically in Figures 1 and 2, the heating means may be formed at the walls of the nozzle allowing the circulation of a heating fluid. This heating fluid constitutes the secondary fluid of a heat exchanger, not shown.

The hot secondary fluid circulates in the thickness of the nozzle 7, 8, 9.

In a preferred mode, the secondary fluid is heated by means of a primary fluid at the level of the heat exchanger by means of solar collectors 21 also represented in FIG. 1.

The collectors 21 may have a conical shape ensuring a large solar energy collection surface or else be positioned on the side walls of the power plant as shown by the two references 21 in FIG. 1.

In the event of a lack of supply of solar energy, another additional energy 22 may be used as shown in FIG. 1. By way of example, the heating means 20 present in the thickness of the nozzles 7, 8, 9 will make it possible to reach a temperature of the order of 90 ° C.

To optimize the constitution of the turbo alternator means, one or more engine blocks 3, 4, 5 may comprise, at the head of its hub 19, a set of turbines driven by a rotational movement.

The set of turbines is not shown here but may be constituted in a conventional manner. The rotation of the turbine set will be carried out by means of a depression of the downstream part of the turbines. To do this, a secondary vacuum circuit formed is implemented, as for the circuit 16 for depression, from the narrowing 18 but this time downstream of each turbine.

The turbines will be driven by a movement at high speed of rotation.

This movement is caused by the significant depression which solicits each of the turbines. This vacuum is produced by means of the secondary vacuum circuit, coming from the neck 12 of the nozzle 7.

In addition, a set of gears downstream of the set of turbines animated in rotation makes it possible to participate in the impulse of the rotational movement of the propellers 13, 14, 15.

The rotation performed by the turbines can also be transformed at the alternator assembly 10 into electrical energy.

It may be useful in the plant 1 according to the invention, to have a gas reserve upstream of the preparation compartment 2.

To do this, the central compartment 1 shall include preferentially a ^'of head 23 as shown in Figure 1. The head compartment 23 provides an inlet assembly for the gas flow to the preparation compartment 2.

The head compartment 23 may, according to the embodiment of FIG. 1, be a spherical hot air balloon extended by a conical skirt having the shape of a divergent cone made integral with the spherical volume of the hot air balloon.

The assembly can be coupled to the body of the control unit 1 via, on the one hand, the large section of the conical skirt and, on the other hand, by a cap in the form of a mesh produced by cables 29.

As regards the distribution means, they may be formed from a distribution compartment 24.

This compartment 24 allows the gas flow to be reinjected into the head compartment 23 and the preparation compartment 2.

We have identified by the references 25 and 26 two return circuits of the gas flow from the distribution compartment 24 to the head compartment 23 on the one hand, and the preparation compartment 2, on the other hand.

In a preferred embodiment, the return circuits 25, 26 are distinct and are on the one hand for the circuit 25, a return of hot gas, and on the other hand, for the circuit 26, a return of lukewarm gas. As shown in FIG. 1, the circuit 25 leads directly into the preparation compartment 2.

As regards the circuit 26, the gas flow will preferably pass through a battery of heat exchangers 27 before being reinjected at the level of the head compartment 23. The primary function of the battery of heat exchangers 27 is to cool the gas and therefore participate in the reinitialization of the gas properties at the level of preparation compartment 2. Furthermore, the battery 27 makes it possible to recover thermal energy drawn from the gas heated by the preceding stages of the cycle.

This creates a cogeneration plant for thermal energy and electrical energy.

Throughout the gas flow circulation circuit, the burners 28 can be positioned to punctually activate this circulation.

In fact, the burners 28 provide a high but very localized rise in temperature which generates an increase in the speed of the gas flow.

We can use burners 28 with automatic action powered by a fossil fuel such as fuel oil or natural gas. Their function is to organize in the area where they are located dynamic heating of the volumes they control.

They make there reign a temperature slightly higher compared to that of the ambient environment which allows the formation of a movement of gas flow. The operation of the central unit 1 according to the invention is described below in the particular embodiment corresponding substantially to that of FIGS. 1 and 2.

Firstly, it is a question of starting up the power station 1. To do this, part of the volume of air present in the power station is drawn up.

Indeed, the power plant constitutes a volume for example of the order of 80,000 to 100,000 m3.

The suction of part of this volume allows the creation of a partial vacuum, for example of a height of 400 mm of water in all the enclosures of the power plant 1.

To do this, the central unit 1 may include starting means creating an initial depression downstream of the turbo alternator means. Via the starting means, a vacuum is produced.

This vacuum production absorbs energy and induces a decrease in the speed of the intake flow. For example, it will go from a speed of the order of 200 m / s to a speed of 100 m / s.

To compensate for this loss of speed, the neck 12 of the nozzle 7 is provided with a thermal network acting as heating means 20 in the form of a heat exchanger started in order to obtain an ambient temperature above for example 70 ° by radiation phenomenon.

In this way, the volume of the incoming flow is increased.

Under the effect of the rise in temperature and the resulting expansion of the gas, the speed of the latter rises and accelerates.

At the outlet of the neck 12 of the nozzle 7, a high-power burner 28 amplifies the preceding action by causing a slight but immediate increase in temperature on the currents of the gas flow. It follows a new expansion of the gas with the consequence of an increase in its speed.

As shown diagrammatically between the references 3 and 4 in FIG. 2, the circulating flow engages in the nozzle 8 of the second engine block 4. It will undergo a deceleration there in line with the propeller 14.

For example, it is expected that the speed will reach a minimum of 60 m / s.

It will be noted that, under the action of the circuits 16 for placing under vacuum, a vacuum is additionally provided downstream 17 of the propeller 13.

Combined with the starting means, the heating means 20 of the nozzles 7, 8, 9 are used.

Under the effect of the heating of the walls of the nozzles 7, 8, 9, via the network of solar collectors 21 in which circulates a thermogenic primary fluid and the circulation of which is triggered automatically as part of the start-up of the plant 1, the following phenomena occur: There is a rise in temperature of the engine blocks 3, 4, 5 with , for the nozzle 7 of the engine block 3, a so-called low temperature for the first third of the nozzle 7, and the so-called average temperature in the second third and a so-called high temperature in the last third. On the other hand, in the following nozzles 8, 9, the temperatures are uniform with a tendency towards the high point.

On the contrary, simultaneously, the wall 6 of the preparation compartment 2 undergoes the action of the cooling means.

The preparation compartment 2 in fact receives between these walls 6, a refrigeration fluid constituted in particular by fresh air produced by an air cooler whose mission consists in producing this fresh air for the use of the walls 6.

Under these conditions, and during the first start-up phase, the vacuum produced by the starting means is maintained in the volume of the preparation compartment 2 and also in a large part of the nozzle 7 of the engine block 3.

On the other hand, in the other nozzles 8, 9, the vacuum will decrease under the effect of the increase in the volume of the gases which they contain as a result of the rise in temperature.

The action of the burners 28 can be engaged so as to generate an appearance of gas flow movements in the different enclosures of the power station 28. FIG. 1 illustrates different possible positions for the burners 28 in different places of the power station 1.

The gas movements that are generated occur from upstream to downstream of the plant 1 as shown in the diagram in Figure 2. According to this figure, the flow passes successively from the head compartment 23 to the preparation compartment 2 to the engine block 3 and to the other two engine blocks placed in series 4, 5, before reaching the distribution compartment 24.

A reinjection of the flows from the compartment 24 towards the head compartment 23 and the preparation compartment 2 allows the formation of a continuous cycle.

Under the effect of the strong air suction created downstream of the engine block 5 by the starting means and the overpressure of the walls 6 upstream of the preparation compartment 2, the movement of the gas flow accelerates .

There follows a rotation of the propellers 13, 14, 15.

A power-up phase of the power plant 1 then commences. In this phase, the three engine blocks 3, 4, 5 take on their full importance and allow the generation of electrical energy by means of the alternator assembly 10.

The cooperation between the engine blocks 3, 4, 5 and the alternator assembly 10 is shown diagrammatically by dotted arrows in FIG. 2.

The cores 11 allow the continuous increase in the speed of passage of the gas flow in line with the neck 12 of each nozzle 7, 8, 9.

The modification of the diameter of the core 12 under the effect of these adjustment means causes, on request, an increase in this speed and therefore an increase in the vacuum in the vacuum circuit.

An acceleration of the rotation of the propeller 13 is thus produced, which accelerates the whole cycle. The plant 1 presented here may include different means capable of regulating and controlling the operating parameters of the circulation of the gas flow so as to regulate the amount of energy produced. The means for adjusting the diameter of the core 12 participate in this control.

Furthermore, diaphragms ensuring limitations on the passage surface of the gas flow may be used. Finally, continuous monitoring of the cooling means and the heating means 20 can be carried out.

In general, all of the operating parameters of the central unit 1 can be controlled to obtain the operation desired by the user. As shown diagrammatically in FIG. 2, a return circuit 26 will be formed from the distribution chamber 24 towards the head compartment 23.

To allow a return of lukewarm gas, the gas flow will pass through a battery of heat exchangers 27 shown diagrammatically in FIG. 2.

The battery of heat exchangers 27 ensures the cooling of the gas flow circulating in the circuit 26 and allows the recovery of thermal energy as symbolized by the arrow 30 in FIG. 2. The arrow 31 illustrates meanwhile the recovery of electrical energy from the alternator assembly 10.

FIG. 2 also shows the second return circuit, circuit 25.

It does not undergo cooling which allows injection, at the level of preparation compartment 2 of hot gas.

The cycle thus described can be repeated continuously in order to generate the electrical energy and possibly the thermal energy desired by the user. It should be noted that the electrical energy generated can be considerable. Indeed, by the series positioning of several engine blocks 3, 4, 5, very high angular speeds are reached for the propellers at the end of the chain which are driven by very high fluxes. However, in the operating formula of power plant 1, the speed of flows is shown as a numerator at cubic power.

The energy results are therefore unrelated to current techniques. Second embodiment

According to the example which follows, illustrated by FIGS. 3 and 4, the power station is open to the outside for admission to a natural wind. We therefore place ourselves here in an application of the wind type even if partial recirculation of the gas flow is not excluded.

Motor blocks 3, 4 are still present to generate electricity. Their general design may be similar to that provided in the previous example.

For reasons of weight and dimensions, the number of engine blocks 3, 4 will advantageously be limited to 2 in this embodiment.

The central unit 1 has an envelope 41 which can be made of fabric or neoprene and lined with a layer of waterproof material such as natural rubber. A real bladder is thus formed to receive hot air drawn from inside the envelope.

Preferably, the envelope 41 is in several connected sections.

Advantageously, the structure of the central unit (1) is mounted on a stand as described in a previous embodiment.

This foot can be adjustable in height so as to place the central unit (1) at a level in order to obtain a wind speed at the entrance to the central unit allowing efficient operation thereof.

As shown in FIG. 3, the central unit 1, in this embodiment, comprises substantially a head part and a tail part 35. The outside air is admitted from the head part to reach the tail part 35 at the end of the cycle. To introduce the air inside the central unit 1, the latter comprises a capture 40. This capture mouth illustrated in FIG. 3 is positioned upstream of the first of the engine blocks 3, 4.

In order to limit the cross-section of the air introduction zone and to allow adjustment thereof, the central unit also preferably comprises a collection module 32 positioned in front of the collection mouth 40.

Preferably, the axial position of the capture module 32 is adjustable so as to modify at will the section of the air introduction zone.

The presence of this module is therefore particularly advantageous for adjusting the parameters of the unit 1 and for causing an acceleration of the incoming air flow from the start.

The displacement means along the axis of the central unit 1 presented by the capture module 32 may be constituted in a current manner, and in particular by a gear drive with planetary gear.

To allow the central unit 1 to function properly in this embodiment, it is necessary to create a vacuum downstream of the engine blocks 3, 4 so as to ensure circulation at high flow speed.

In this context, the circulation means comprise a generator block marked 34 in FIG. 3.

This has the function of strongly cooling the air flow, in order to contract it and therefore create a vacuum.

A suction effect is therefore produced downstream of the engine blocks 3, 4, which allows the air flow to accelerate. Preferably, an intermediate block 33 is positioned intermediate between the engine blocks 3, 4 and the generator 34.

A first cooling step is thus operated in order to avoid thermals and to make the cooling to be carried out more progressive.

To operate the cooling, the generator block 34 includes an intermediate block 33 with a very large contact surface in which a refrigerant circulates. Freon can be used for this purpose.

In addition to this main circuit for circulating the air flow from the capture mouth 40 to the tail 35 of the plant 1, various additional circuits can be formed.

Firstly, a collection circuit 39 is advantageously formed downstream of the propeller of one of the engine blocks 3, 4.

As illustrated, this collection circuit 39 captures part of the air flow passing downstream of the propeller, for example from the first of the engine blocks. This air flow has a high speed, and can be reused in the rest of the plant for other purposes.

In particular, the air flow from the collection circuit

39 can be a power source for a large hydro-ejector present at the level of the generator block 34 and allowing an accentuation of the depressurization of the air flow.

Furthermore, the intermediate block 33 can also benefit from part of the flow collected by the collection circuit 39. To this end, the intermediate block 33 can comprise a plurality of cells receiving part of the main air flow from the downstream of the engine blocks 3, 4. Each cell includes a hydro-ejector working in the form of a trumpet vacuum and each supplied with part of the air flow from the collection circuit 39.

Preferably, another working fluid is used for the operation of the hydro-ejectors. It could be a fluid produced by an electric fan unit capable of drawing at high speed an air flow in the center of the vacuum tube.

Another additional circuit can be formed in the present plant 1. Thus, an upstream circuit 38 also identified in FIG. 3 and formed from the front face of the plant

1 to accelerate an air flow with a view to its introduction into the intermediate block 33.

The upstream circuit 38 begins with cones 43 opening onto the front face of the plant 1. These cones 43 converge towards the interior of the plant to accelerate the flow.

This flow opens into the intermediate block 33 to accelerate the air flow passing through it. In this regard, the introduction of the air flow from the upstream circuit 38 can take place in a chamber located upstream of the cells comprising hydro-ejectors.

Furthermore, in this chamber, an exchanger can be formed at the level of the wall in order to effect a first cooling of the air flow. In this way, the intermediate block 33 is a real intermediate step before passing through the generator block which will effect additional depressurization and produce a greater acceleration of the flow.

In order to ensure good stability of the power station 1, in the presence of lateral winds, it may include inlets of lateral winds 37 illustrated in FIG. 3 over all or part of the lateral surface at the level of the envelope 41.

These lateral wind inlets 37 supply a stabilization circuit 44 of the power plant. The air flow generated at the interior of the stabilization circuit 44 can be forced back towards the central tail 35 1.

Additionally, a ramjet circuit 36 may be present. This circuit is provided with at least one ramjet and preferably with a minimum of four ramjet.

Each ramjet is capable of accelerating an incoming air flow to supply a vacuum pump accentuating the vacuum produced by the generator block 34. The ramjet and hydro-ejector members mentioned above may be constituted in a known manner.

The following describes briefly the operating mode of the central unit 1 in the embodiment mentioned.

Initially, an outside wind allows the introduction of air inside the power plant 1 through the intermediate introduction zone between the capture mouth 40 and the capture module 32. The possibility of adjusting the lateral position of the adjustable lips 42 allows the section of the air introduction zone and therefore the flow produced at this location to be modified at will.

Once introduced, the air flow passes through a first engine block 3 then a second engine block 4 according to an operation similar to that presented for the first embodiment. Downstream of the engine blocks 3, 4, an assembly making it possible to generate a vacuum necessary to bring the air flow at a speed sufficient for proper operation is present. For this purpose, a generator block 34 is formed. This generator block 34 is preferably supported by an intermediate block 33. The object of these assemblies is to ensure that the air passing through this main circuit is placed under vacuum.

In particular, a heat exchange step can be formed at the level of the intermediate block 33 and of the block generator 34 in order to cool the air flow of the main circuit.

Heat exchangers are therefore advantageously formed for this purpose in these members. Furthermore, the acceleration of the main air flow can be accentuated by the additional action of the complementary circuits. Thus, at the level of the intermediate block 33, an acceleration can be produced by supplying hydro-ejectors with a flow of air coming from the collection circuit 39.

A similar operation can be operated at the level of the generator block 34 and also from the supply of the collection circuit 39.

Furthermore, additional acceleration can be produced at the level of the intermediate block 33 by introducing the air flow coming from the upstream circuit 38.

Once passed through the generator block 34, the air flow is then evacuated.

Advantageously, a ramjet circuit 36 supplies a vacuum pump present in the generator block 34 to further increase the vacuum produced for the fluid of the main circuit.

This fluid which consists of air circulating at high speed is ejected from the central unit 1 at the level of the tail 35. To make the most of the presence of such a fluid at high speed, it is possible to reinject it at least partially at power plant head level.

To this end, a feedback circuit 45 can be formed from the outlet of the ramjet engines 36 to the capture mouth 40.

This reinjection circuit 45 may consist of various pipes going up towards the head of the power plant 1, and emerging at the level of the capture module 32. REFERENCES

1. Central

2. Preparation compartment 3. Engine block

4. Engine block

5. Engine block

6. Preparation compartment walls

7. Engine block nozzle 3 8. Engine block nozzle 4

9. Engine block nozzle 5

10. Alternator assembly

11. Engine block core 3

12. Nozzle neck 7 13. Engine block propeller 3

14. Engine block propeller 4

15. Engine block propeller 5

16. Vacuum circuit

17. Downstream of the propeller 13 18. Narrowing

19. Propeller hub head 13

20. Heating means

21. Solar collectors

22. Auxiliary energy 23. Head compartment

24. Allocation compartment

25. Hot gas return circuit

26. Warm gas return circuit

27. Heat exchanger coil 28. Burners

29. Cables

30. Thermal energy production

31. Production of electrical energy

32. Collection module 33. Intermediate block

34. Generator block

35. Tail

36. Ramjet circuits 37. Side wind inlets

38. Upstream circuit

39. Collection circuit

40. Capture mouth

41. Envelope 42. Adjustable lips

43. Cone

44. Stabilization circuit

45. Feedback circuit

Claims

1. Power plant (1) for generating electrical energy, comprising turbo alternator means for creating electrical energy from a gas flow, characterized in that it comprises means for circulating the gas flow towards the turbo alternator means, and that the turbo alternator means comprise one or more engine blocks (3, 4, 5) delimited by a nozzle (7, 8, 9) and each provided with a propeller (13, 14, 15 ) driven in rotation by the gas flow, each engine block (3, 4, 5) being connected to an alternator assembly (10) for the creation of electrical energy.

2. Plant (1) according to claim 1, characterized in that at least one engine block (3) has a narrowing (18) formed between a core (11) in the axis of the propeller (13) and a neck (12) produced on the nozzle (7).

3. Plant (1) according to claim 2, characterized in that a depression circuit (16) is formed substantially between the narrowing (18) and the downstream (17) of the propeller (13) d 'one (3) of the engine blocks, to increase the pressure difference between the upstream and downstream (17) of the propeller (13).

4. Control unit (1) according to any one of claims 2 or 3, characterized in that at least one engine block (3) comprises an adjustable core (11) for the narrowing of the passage surface of the gas flow, making it possible to vary the acceleration of the gas flow at the level of the core (11).

5. Power plant (1) according to any one of claims 2 to 4, characterized in that that the nozzle (7, 8, 9) is provided with gas heating means (20).

6. Power station (1) according to claim 2, characterized in that at least one engine block (3) comprises, at the head (19) of the propeller hub (13), a set of turbines driven by rotational movement, and a secondary vacuum circuit is formed between the narrowing and downstream of each turbine, to rotate them.

7. Plant (1) according to claim 5, characterized in that the heating means (20) are formed by a heating fluid circulating in a circuit formed in the thickness of the nozzle (7, 8, 9), - said fluid is heated by means of a heat exchanger.

8. Plant (1) according to claim 7, characterized in that the primary fluid of one heat exchanger is heated by means of solar collectors (21).

9. Power station (1) according to any one of claims 1 to 8, characterized in that

the circulation means comprise a preparation compartment (2) located upstream of the turbo alternator means, capable of placing the gas under the initial thermodynamic conditions of the flow circulation cycle,

- It includes distribution means capable of re-injecting at least part of the gas flow upstream of the turbo alternator means from their downstream.

10. Plant (1) according to claim 9, characterized in that the preparation compartment (2) has means for cooling the gas.

11. Plant (1) according to claim 9, in combination with any one of the other claims, characterized in that it comprises a head compartment (23) forming a gas reserve upstream of the preparation compartment (2 ) and receiving at least part of the gas flow from the distribution means before being admitted into the preparation compartment (2).

12. Plant (1) according to claim 11, characterized in that the distribution means are formed by a distribution compartment (24) reinjecting the gas flow into the head compartment (23) and / or the preparation compartment (2) by means of return circuits (25, 26).

13. Plant (1) according to claim 12, characterized in that the distribution compartment (24) has a hot gas return circuit (25) to the preparation compartment (2) and a lukewarm gas return circuit (26) to the head compartment (23).

14. Plant (1) according to claim 13, characterized in that it comprises a battery of heat exchangers (27) by which the warm gas return circuit (26) takes place in order to cool the gas coming from the distribution compartment (24) before being reinjected into the head compartment (23).

15. Power plant (1) according to claim 14, characterized in that the battery of heat exchangers (27) generates recoverable thermal energy.

16. Control unit (1) according to any one of claims 1 to 15, characterized in that that the circulation means have burners (28) positioned in the gas flow circuit to punctually activate the circulation.

17. Central (1) according to any one of claims l to 16, characterized in that it comprises starting means, creating an initial depression downstream of the turbo alternator means for the start of their rotation.

18. Power station (1) according to any one of claims 1 to 8 characterized in that the gas flow is an air flow and that it comprises a wind catchment (40) upstream of the first engine block (3, 4, 5).

19. Plant according to claim 18, characterized in that it comprises a capture module (32) capable of delimiting, with the capture mouth, an air introduction zone.

20. Plant according to claim 19, characterized in that the capture module (32) has means of displacement along the axis of the plant (1) to modify the section of the air introduction zone.

21. Plant (1), according to any one of claims 18 to 20 characterized in that the circulation means comprise a generator block (34) downstream of the engine blocks (3, 4, 5) capable of cooling the air flow for its depression.

22. Power plant (1) according to claim 21, characterized in that it comprises an intermediate block (33) placed in an intermediate position between the engine blocks (3, 4, 5) and the generator block (34) in order to produce a first acceleration of the air flow.

23. Power station (1) according to claims 21 or 22 characterized in that it comprises an air collection circuit (39) downstream of the propeller of one of the engine blocks (3, 4, 5) and that the generator block (34) comprises at least one hydro-ejector supplied by the collection circuit (39) to accentuate the depressurization of the air flow.

24. Power station (1) according to any one of claims 18 to 23, characterized in that it comprises inlets of lateral winds (37) over all or part of its lateral surface feeding a stabilization circuit (44) of the central (1).

25. Plant (1) according to claim 21 in combination with any one of claims 18 to 20 or 22 to 24 characterized in that it comprises a ramjet circuit (36) provided with at least one ramjet capable of accelerate an incoming air flow to feed a vacuum pump accentuating the vacuum produced by the generator block (34).

26. Power station (1) according to claim 22 in combination with any one of claims 18 to 21 or 23 to 25 characterized in that it comprises at least one upstream circuit (38) starting from cones (43) opening out front face of the central unit (1), said cones (43) being convergent towards the interior of the central unit (1) to accelerate the air flow with a view to its introduction into the intermediate block (33).

27. Plant (1) according to claim 25 in combination with any one of claims 18 to 24 or 26 characterized in that it comprises a reinjection circuit (45) of at least part of the air flow leaving the ramjet circuit

(36), for its introduction at the level of the collection mouth

(40).

28. Power station (1) according to claims 22, 23 and 26 in combination, characterized in that the intermediate block (33) comprises a plurality of cells each comprising a hydro-ejector working in vacuum tube by feeding part air flow from the collection circuit (39).

29. Power station (1) according to claim 28 characterized in that the intermediate block (33) comprises a chamber receiving the flows from the cells, said chamber having a wall acting as a heat exchanger for a first cooling of the flow of air and having an inlet for the introduction of the air flow from the upstream circuit

(38).